If you’re diving into the world of high-performance engines, you’ve probably heard about ACL Race Series Engine Bearings. These aren’t just any bearings; they’re crafted with a unique blend of design, metallurgy, and engineering that really gets what drivers need when pushing their engines to the limit. Whether you’re working on a 4, 6, or 8-cylinder setup, these bearings are built to handle the high RPMs that come with serious driving.

What sets these bearings apart? For starters, the high-strength overlay plate is thinner, which means better fatigue resistance. That’s crucial when you’re wringing every bit of power out of your engine. The hardened steel backs on the rod bearings provide solid support for the bearing lining, ensuring they stay put even under intense conditions. You’ll appreciate the increased crush as well, which enhances bearing retention—no one wants to deal with a bearing that’s shifted out of place mid-race.

Another standout feature is the elimination of flash plating on the back of the bearings. This little tweak significantly improves heat transfer, helping to keep things cool under pressure while maximizing grip between the bearings and their housing. Plus, the increased eccentricity helps compensate for bore distortion at high RPMs, which is essential for forming those hydrodynamic oil films that keep everything lubricated and running smoothly.

Let’s talk specifics: the 3/4 grooved main bearings are designed to optimize load-carrying surface area and oil flow to the conrod bearings, which is a big deal when you’re pushing your engine hard. And with tight, consistent wall tolerances, you can maintain the clearances you need for peak performance. They’ve even thought about the bearing edges—enlarged ID chamfers accommodate those larger fillet radii found on performance crankshafts.

In terms of specs, you’re looking at standard sizes like STD and 0.025, with standard oil clearance and identical halves. These bearings are made from tri-metal hardened steel backs, ensuring durability. They fit perfectly on Nissan Maxima models from 1981 to 2018, specifically the VQ35DE 3.5L V6. The dimensions are spot-on, with a minimum standard shaft size of 2.0455 inches and a maximum of 2.0463 inches. The tunnel sizes range from 2.1654 to 2.1659 inches, and the overall length is about 0.669 inches.

So, if you’re serious about getting the most out of your engine, these ACL Race Series Engine Bearings might just be what you need. They’re built for performance and designed to last, so you can focus on what really matters—driving hard and enjoying every moment on the road.